//定义google地图样式及标签
var gmap_style = [{
	featureType : "all",
	elementType : "labels",
	stylers : [{
		visibility : "off"
	}]
}, {
	featureType : "road",
	elementType : "labels",
	stylers : [{
		visibility : "on"
	}]
}, {
	featureType : "administrative",
	elementType : "labels",
	stylers : [{
		visibility : "on"
	}]
}, {
	featureType : "poi.school",
	elementType : "labels",
	stylers : [{
		visibility : "on"
	}]
}, {
	featureType : "road.arterial",
	elementType : "labels",
	stylers : [{
		visibility : "on"
	}]
}]
